Have Boat Questions? Ask a Boat Repair Expert.
Hello my name is ***** ***** I will assist you. The problem you have here is loose connection or corroded connections. First thing check the terminals on the battery to be clean. Then check if you have a main switch that when put on the ON position, there is actually continuity from one terminal to the other. check also the continuity of each power line from the engine to the battery, there should be 0 resistance. Finally check the terminals on the engine, the earth wire and the positive on the solenoid to be clean and properly tight.
If you still have the problem post back but checking the above should find the culprit of your problem.